I've had mixed opinions on tea tree oil in general. Some brands are labeled as TTO, but are mixed with other oils to temper the smell and harshness of pure TTO, so are essentially useless. One brand of 100% TTO that I tried fulfilled the criteria of being 100% pure, but I saw no significant improvement on my skin. This brand, I'm really liking so far. I use TTO primarily on acne, and I've found that if I dab a little bit on a spot before I go to bed, it is GREATLY diminished in the morning (no, it doesn't completely disappear in one day- in my experience, no product can do this- but it helps it shrink before it gets too big or noticeable, or leaves a red mark that lasts for weeks). My skin is not sensitive at all and is very oily, so I can handle dabbing 100% TTO on my face. If your face is sensitive, I would do a patch test or dilute the oil with something else.